Ok so, photo-bio reactor turns waste water and sunshine into algae, algae is dried by a filter tube / and filter screw that the water falls out of, while heated with solar (unknown sizing still), the solar drier will use a sterling engine as well, and also will require another focusing lens/ passive sun tracker to power the screw etc.

then the dry algae is collected in a hopper, and fed via another screw that is insulating, up another tube, through a zone that is heated to extreme temps by the large magnifying glass, this produces hydrogen and Carbon monoxide, through thermolysis/Gasification, this is then fed into a generator, I prefer a wave disk engine as they are more efficient then a internal combustion, without the high failure mode of a turbine(catastrophic

the exhausted water and Co2 are fed back into the bio reactor, along with waste water, starting the whole thing over again,

the idea here is all energy released is solar, and all proccessing power is solar, so there is no carbon sink, or exotic materials required, and no nasty chemicals, what goes in.... comes out.... and goes in...

_________________Let not the bindings of society hold you back from improving it.... the masses follow where the bold explore.